This instrument is used to
measure and record the
atmospheric air pressure.
The recording is carried out by
means of a hand wound clock
work drum mechanism acc.
to DIN 8300 and DIN 58658
(3.0800... ; 3.0804....) or with a
Quartz clock work (3.0815....).
The on-site elevation can be
set by means of an adjusting
screw.

A precision measuring and
recording instrument to
determine the atmospheric
pressure. Elevation above the
sea level can be set at the
measuring site on a setting
knob. The recording is carried
out by means of a hand wound
clockwork drum mechanism
acc. to DIN 8300 and DIN
58658.